Her body fights against the bonds. Not with a desire to be free, but a desperation to take more of him inside.
As his finger plunges deep inside her molten, dripping core, she bucks, and squeals.
As his finger curls inside her spasming cunt, the ropes tighten, her muscles tensing, pleasure radiating from the tip of his finger, through her sex, taking over her mind as she falls into an orgasmic trance.
With a single digit he orchestrates climax after climax, knowing her body as only he can, for she is his, and she has surrendered all to him.